Adjustable locking handle



FIG. 1 is a perspective view of an adjustable locking handle showing my new design;

FIG. 2 is a reduced bottom plan view thereof;

FIG. 3 is a reduced right end elevational view thereof;

FIG. 4 is a reduced front elevational view thereof;

FIG. 5 is a reduced left end elevational view thereof;

FIG. 6 is a reduced top plan view thereof. 

The ornamental design for an adjustable locking handle, as shown. 